🎨(structure) restructure backend code

Author: ChristopherSpelt

backend/bureaublad_api/routes/rss.py

@@ -10,7 +10,6 @@
 
 @router.get("/")
 async def rss_feed(url: str = Query(..., description="URL of the RSS feed")) -> Response:
-    # Validate URL hostname against whitelist to prevent SSRF attacks
     parsed_url = urlparse(url)
     hostname = parsed_url.hostname